Machine for working hides or skins



(No Model.) 3Sheets-Shet- 1;.

G. W. BAKER. MAQHINE FOK WORKING HIDES 0R SKINS- No. 512,088. 3 PatentedJan.2,1894.

WITNESSES v INVENT'OR5 6605M. 74M. am m (No Model.) a Sheets-Sheet G. W.BAKER. MACHINE FOR WORKINGHIDBS 0R" SKINS. No. 512,088. La Patented Jan.2, 1894.

WITNESSES INVEJVTQR 3 Sheets-Sheet 3..

7 (No Model.)

Pat ented Jan. 2; 1894.

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Attorney W'ITJV'ESSES Nrrsn States ATENT rm.

MACHINE FOR WORKING HIDES OR SKINS.

SPECIFICATION forming part of Letters Patent No. 512,088, dated January2, 1894.

Application filed October 7, 1893. Serial No. 487,455. (No model.)

T0 at whom it may concern.-

Be it known that I, GEORGE W. BAKER, a citizen of the United States, anda resident of Wilmington, in the county of New Castle and State ofDelaware, have invented certain new and useful Improvements in Machinesfor Vorking Hides or Skins; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had tothe accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a front elevation of the invention. Fig. 2is an end view of the same. Fig. 3 is a similar view from the oppositeend and Fig. 4 is a transversevertical section on line 0c 00 Fig. 1.

This invention has relation to certain new and useful improvements inmachines for working hides or skins, and it consists in the novelconstruction and combination of parts, all as hereinafter described andpointed out in the appended claims.

The invention, while particularly designed for fleshing, is alsodesigned for working out nnhairing, and other treatment, and has for itsobject the provision of improved means for clamping the hide or skin tothe revolving drum or cylinder, and for automatically operating theclamp at the proper time.

A further object consists in the provision of means whereby all parts ofthe hide or skin may be given equal treatment by the knives or scrapers.As is well known hides and skins are much thicker at certain portionsthan at others, and great difficulty has been experienced in theprovision of practical means for effecting a uniform treatment of boththe thicker and thinner portions at a single operation. This difficultyI largely obviate by the means hereinafter described. A further objectconsists in the provision of means for automatically stopping the drumor cylinder at the proper time.

Other minor features of improvement embraced in the invention willhereinafter apear. p Referring to the accompanying drawings illustratingthe invention, the letter A, designates the supportingframe which shouldbe of such design as to provide proper bearings and support for theparts now to be described.

B designates the drum or cylinder which is supported longitudinallybetween the ends of the frame by means of its central shaft 1) withwhich it is fast. Said shaft at its end portions has, hearings in arms0, O, which are loosely sleeved or pivoted upon a longitudinal rod orstationary shaft D. The drum or cylinder has a longitudinal segment Eremoved therefrom to permit the proper insertion of the hide or skin tobe operated upon.

F designates the main or driving shaft which is supported in boxes inthe upper portion of the frame, parallel with and above the drum orcylinder. On one end portion of this shaft are fast-and-loose pulleys G,G, and a balance wheel G and on the other end portion is a worm H whichis arranged to mesh with and drive a worm wheel H, on'the upper portionof an oblique shaft H journaled in boxes 0, c, and extending downwardand rearward. On the lower portion of this shaft is a bevel gear wheel11 which meshes with and drives a corresponding wheel H journaledloosely on the stationary rod or shaft D before' referred to. Fast withthe gear Wheel H is a pinion H which gears into a large toothed wheel Hrigidly mounted on the end portion of the drum shaft, thus providing forthe rotation of the drum.

The worm wheel H is loosely journaled on the shaft H and is providedwith a clutch, the movable section it of which has a sliding but fastconnection with the said shaft and is engaged by the fork h of aclutch-lever 71 pivoted to the end frame at 71 The upper and shorter armof this lever is connected by a link 9 with acrank-arm g of alongitudinal rock-shaft g jonrnaled in arms g of the frame, over thedrum, and operated by a handle lever g", by means of which the clutchmay be thrown into and out of gear to stop or start the drum. The lowerandlonger arm of the lever 77/2 has an adjustable connection with arearward extending rod or link I which at its rear portion is adjustablyconnected to an armor lever I pivoted to the lower portion of the frameat 1;. Fast to the drum shaft, in-

side the large gear wheel H", is a cam arm J so situated that when thedrum has made its proper revolution, said arm contacts with the arm orlever 1, rocking the latter rearwardly on its pivot, and through thelinkI and lever 71 throws the clutch-section it out of gear with theworm wheel, in this manner providing for the automatic stoppage of thedrum.

K designates the clamp which holds the hide or skin to the drum duringtreatment, and which consists of a bar parallel with the forward edge ofthe cut-away portion of the drum against which it is arranged to clamp.Said bar is carried by arms which at theirinner ends are secured,usually by set screws 74;, to a longitudinal shaft K, parallel with thedrum shaft-,but eccentrically thereof, the bearingsk for said shaftbeing in the frames and heads of the drum. Secured on each end portionof said shaft K, outside of its bearings 70 is a cam-arm L, the rearportion of which is weighted sufficiently heavy, as shown at Z, to morethan counterbalance the clamp-frame. On the forward end portion of eachof said cam-arms is a cam-lug or roller Z which is adapted to engage ortravel upon the inner face of a cam-ring M. One of these cam-rings isprovided at each end, and is made rigid with the frame, or as shown,with the bearings of the drum-shaft, and in eccentric relation to theclamp-shaft K. These cams do not form a complete circle, but are open atm.

In order to provide for the adjustment of the clamp-frame to render itsaction more or less positive, the shaft K is provided with lugs kprovided each with an adjusting screw k which engages the respectivearms is which as above stated are usually sleeved upon the said shaftand secured by set screws is.

On the driving shaft F, above the drum, is the fleshing or working rollN, shown as provided with the customary spiral arrangement of cutters orscrapers. The normal distance of the drum from this roll is regulated bythe adjusting devices 0, which consist of a vertical rod ateach endengaging and supporting the bearings for the drum shaft, and extendingdownwardly through the bar a of the frame A. Said rods are provided withthreads to receive the nuts 0, 0, one above and one below the bar a.Confined between the upper nut o and the said bar, and coiled aroundeach of said rods, is a spring P, the tension of which is renderedadjustable by means of the said nuts, thus providing an adjustable and ayielding support for the drum.

Hides and skins, as is well known are much thicker along the back andcentral portions than at the flanks, and the hides being usually splitlongitudinally along the center before treating, each section so formedis thlcker at one edge-than at the other. Owing to this fact it has beena matter of considerable difficulty to provide means for uniformilytreating all parts of the hide in machines of this character. The meanswhich I employ to'obviate this difficulty to a large extent will now bedescribed. 7

Journaled in the base of the frame underneath the drum are twoindependent shafts R, R placed end to end, and having a common bearing7* at the center. Each of said shafts near its outer end is providedwitha rearwardly projecting crank arm R and connecting these crank-arms withthe forward, projecting end portions of the respective arms C, O, arelinks or levers S, S. I A

Each shaft R, R is provided near its inner end with a treadle T or T,said treadles being shown as sleeved on the said shafts and engagedtherewith by means of lugs shaving set screws 8 which are arranged tobear upon rearward projections t of the treadles, whereby when saidtreadles are depressed, their respective shafts are rocked.

The two shafts R, B being independent of each other, and being eachconnected with its own end'of the drum in the manner described, itfollows that when either treadle is operated, the corresponding endportion of the drum will be raised into closer relation to the workingroll, and that when both treadles are depressed the drum will be raiseduniformily to the roll. By this arrangement it will be apparent that atwhichever side the thinner portion of the hide or skin may come, thatside may be raised so that it shall be uniformly treated.

The operation is as follows: The hides or skins are worked for length,and are inserted underneath the clamp bar K, about one'half the lengthlying inside the drum in the cutaway portion thereof. The drum is throwninto gear, and by its revolution brings the hide or skin to the actionof the roll, the treadles in the meantime being properly operated. Asthe drum commences to revolve the cam-arms L engage with the cam-rings Mrocking the shaft K and forcing the bar K down into clamping contactuntil the required revolution has been completed, when the open portionsm of the rings releases the arms, and their weighted rear portions actto throw the clamp upwardly and release the hide or skin. At the sametime the cam arm J acts upon the arm or lever I and the clutch lever 72.to throw the drum out of gear, and stop it while the hide or skin isreversed end for end, or a fresh one is inserted, when it is againthrown into gear by means of the bandle lever g and the operationrepeated. A gravity pawl W which engages with a toothed wheel W on thedrum shaft prevents the drum from backward movement, and therebyprevents injury to the machine should the gear give way.

The form of clamp above described is a superior one for the purpose inthat it is au-- tomatic in its action, which is'secure, simple andpositive; in that no backward movement of the drum is required aftereach operation IIO to bring it back to the starting point, and in thatit requires the use of no springs or geared weights.

The treadles being adjustable, by means of the arrangement described,they can be set so that the foot pieces will come in contact with thefloor, or with suitable stops therein, so that the operator cannot raisethe drum sufiiciently to damage the machine or the hide or skin beingtreated.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a hide working machine, the combination with the drum or cylinderhaving a cut-away portion, of the clamp frame acting in said cut-awayportion, a rock-shaft carrying said frame, weighted cam arms on saidshaft, and cam rings engaged by said arms, substantially as specified.

2. In a hide working machine, the combination of the drum or cylinderhaving a cutaway portion, the clam p frame working in said cut-awayportion, the shaft journaled in the drum frame eccentrically of the drumshaft, and carrying said frame, the weighted cam arms on said shaft, andstationary cam-rings engaged by said arms and having open portionsarranged to release said arms at a given time, substantially asspecified.

3. In a hide working machine, the combination of the drum havingasegment removed therefrom, its driving mechanism, the clamp frame withinsaid drum, the rock-shaft carrying said clamp frame and journaled in thedrum frame, the arms on the end portions of said shaft, the cam-ringsengaged by said arms, and having open portions to release said arms at agiven time, and mechanism for automatically throwing the drivingmechanism of the drum out of gear at or about the time said arms arereleased by said rings, substantially as specified.

4. In a hide working machine, the combination of the drum A, the clampbar K, the shaft K journaled in the drum frame, the arms 79 secured onsaid shaft and to the bar K, the arms L on said shaft and having theweights Z and the cam-lugs or rollers Z, and the cam-rings M arranged tobe engaged by said arms, said cams being open at m, substantially asspecified.

5. In a hide working machine, the combination with the main drivingshaft, the drum, the drum shaft, and intermediate driving gear betweenthe main shaft and the drum shaft, of the clutch for throwing the saidintermediate gear into and out of driving relation, the clutch lever,the pivoted arm or lever having a connection with said clutch lever andmeans on said drum shaft for operating said arm or lever to actuate theclutch mechanism and throw the drum shaft out of gear at a given time,substantially as specified.

6. In a hide working machine, the combination of the drum shaft, thedriving shaft, the intermediate gear between said drum and drivingshafts, the clutch for throwing the intermediate gear into and out ofdriving relation, the clutch lever, the rock-shaft and lever having aconnection with onearm. of said clutch lever, the pivoted arm or leverhaving a connection with the other arm of said clutch lever, and a camarm or projection on the drum shaft arranged to contact with saidpivoted arm or lever at a given time and actuate the said clutch tothrow the drum shaft out of gear, substantially as specified.

7. In a hide working machine, the combination with a drum or cylinder,its shaft, and vertically movable and independent bearings for the endportions of said shafts, of a pair of independent treadles connectedeach with one of said bearings, whereby the end portions of saidcylinder may be independently or conjointly raised by the operation ofone or both of said treadles,substantially asspecified.

8. In a hide working machine, the combination with a drum or cylinder,its shaft, the independently pivoted or swinging arms 0,

O, in which said shaft has its bearings, the

yielding and adjustable supports for said arms, the independent treadlerock shafts and treadles, and a connection between each of said shaftsand the respective arm 0, whereby the operation of either treadle willraise the corresponding end portion of said cylinder, substantially asspecified. I

9. In a' hide working machine, the combination with the working roll,the drum, its shaft, the independent, pivoted or swinging arms in whichsaid shaft has its bearings, the rods engaging said arms and extendingdown through arms of the frame, the nuts threaded on said rods, thesprings, the independent treadle shafts and treadles, and connectionsbetween said treadle shafts and the respect ive pivoted or swingingarms, substantially as specified.

10. The combination with a treadle shaft, of a treadle-lever looselysleeved thereon, a lug secured on said shaft adjacent to the treadle,and an adjusting screw carried by said lug and adapted to engage thetreadle, substantially as specified.

In testimonywhereof I affiX my signature in presence of two witnesses.

GEORGE W. BAKER.

Witnesses:

PHILIP O. MASI, GEO. H. PARMELEE.

ICC

